The present disclosure describes tetrahydropyran nucleoside analogs, oligomeric compounds prepared therefrom and methods of using the oligomeric compounds. More particularly, tetrahydropyran nucleoside analogs are provided, having one or more chiral substituents, that are useful for enhancing properties of oligomeric compounds including nuclease resistance and binding affinity. In some embodiments, the oligomeric compounds provided herein hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA.
Synthesis of protected D-altritol nucleosides as building blocks for oligonucleotide synthesis
作者:Brigitte Allart、Roger Busson、Jef Rozenski、Arthur Van Aerschot、Piet Herdewijn
DOI:10.1016/s0040-4020(99)00287-2
日期:1999.5
D-Altritol nucleosides with an adenine and uracil base moiety were obtained by nucleophilic opening of the epoxide ring of 1,5:2,3-dianhydro-4,6-O-benzylidene-D-allitol using the sodium salt of the above mentioned bases. The use of a 2-trimethylsilylethyl protecting group for the O6-function of the guanine base offers a useful compromise between stability and acceptable alkylation yields of the N9-position
Fmoc-Protected Altritol Phosphoramidite Building Blocks and Their Application in the Synthesis of Altritol Nucleic Acids (ANAs)
作者:Mikhail Abramov、Guy Schepers、Arthur Van Aerschot、Piet Herdewijn
DOI:10.1002/ejoc.200600868
日期:2007.3
Fmoc-protected altritol nucleoside phosphoramidite building blocks with adenine, guanine, thymine, uracil, cytosine and 5-methylcytosine as bases have been synthesized. These building blocks were used for the synthesis of altritol nucleicacid (ANA) and chimeric ANA-RNA oligonucleotides. Whilst the yields of oligonucleotides were lower than those obtained with 3′-O-benzoyl-protected altritol building
Four D‐altritol nucleosides with a 3′‐O‐tert‐butyldimethylsilyl protecting group are synthesized (base moieties are adenine, guanine, thymine and 5‐methylcytosine). The nucleosides are obtained by ring opening reaction of 1,5:2,3‐dianhydro‐4,6‐O‐benzylidene‐D‐allitol. Optimal reaction circumstances (NaH, LiH, DBU, phase transfer, microwave irridation) for the introduction of the heterocycles are base‐specific